Hanging of refractory bricks



P 1965 A. L. BIRSE 3,204,587

HANGING 0F REFRACTORY BRICKS Filed April 3, 1964 United States Patent 3,204,587 HANGING 0F REFRACTORY BRICK S Alexander Low Birse, Bonnyhridge, Scotland, asslgnor to John G. Stein & Company Limited, Bonnybridge, Scotland, a corporation of the United Kingdom of Great Britain and Northern Ireland Filed Apr. 3, 1964, Ser. No. 357,208 Claims priority, application Great Britain, Apr. 9, 1963,

14,013/ 63 4 Claims. (Cl. 110-99) This invention is concerned with improvements relating to the hanging of refractory bricks and, more particularly, with the hanging of such bricks in pairs, for example, when patching the refractory roof of a furnace.

It is already known to hang refractory bricks in pairs by means of a hanger device, situated between adjacent faces of the two bricks, which is intended to be supported on a supporting framework located above the refractory roof of the furnace.

[It is, however, a disadvantage in the hanging of a pair of refractory bricks in this manner, particularly where the hanger device is of the type in which oppositely direoted protuberances, which operatively engage with correspondingly formed recesses in the adjacent faces of the two adjacent refractory bricks and at least the operatively upper surface of each of which is horizontal or is downwardly inclined in the direction away from the other protuberance, are presented at one end portion of the device, the other end portion of the device being formed with means whereby the device is suspended from a supporting firamework, that there is a tendency for the bricks to slide off the protuberances presented by the hanger device while the bricks are being manoeuvred into position in the roof of the furnace. it is the primary object of the present invention substantially to obviate this disadvant-age.

In a pair of refractory bricks according to the present invention the bricks are positioned adjacent to one another and at least the adjacent surfaces thereof are encased in metallic plates, a protruding tab or tabs being presented by the metallic plate or plates encasing that face of one of the bricles which is positioned adjacent to the other brick, the tab or tabs being in engagement with a correspondingly positioned recess or recesses formed in the metallic plate or plat-es, presented by that face, of said other brick, which is adjacent to said one of the bricks, and in the associated face of the refractory body proper of said other brick so that separation of the bricks in the direct-ion perpendicular to said adjacent faces of the bricks is prevented, a hanger device, by means of which the pair of refractory bricks .are intended to be hung in the refractory roof of a furnace, being in supporting engagement with each of the two bricks by means of two oppositely directed protuberances presented by the hanger device and disposed parallel to said direction perpendicular to said adjacent faces of the bricks, and the protuberances being disposed within correspondingly formed recesses in said adjacent faces of the bricks.

In the accompanying drawings, in which is illustrated one embodiment of the present invention,

FIG. 1 is a side view of one of the bricks of the pair thereof,

FIG. 2 is a view of the brick illustrated in FIG. 1 in the direction of the arrow A,

FIG. 3 is a side view of the second of the bricks of the pair thereof,

FIG. 4 is a view of the brick illustrated in FIG. 3 in the direction of the arrow B, and

FIG. 5 is a view, in axial section, of the two bricks in interlocking engagement and in conjunction with a hanger 3,204,587 Patented Sept. 7, 1965 device by means of which the pair of bricks are intended I (FIG. 5) which is of the type hereinbefore described.

The longitudinal side faces of the bodies 2 are encased in metallic plates 6 Olf channelled form, two of the plates 6 being attached to each body 2 with the web portion 7 of each plate 6 in engagement with the face 3 or with the opposed main face of the appropriate body 2. As is illustrated in FIGS, 1 and 3 the web portions 7 of the plates 6 which are in cont-act with the faces 3 are cut away at the location of the recesses 4.

Two transversely spaced keying tabs 8 are pressed from the web portion 7 of the plate 6 which is in engagement with the face 3 of the body 2 of the brick 1, the tabs 8 protruding from the associated external surface of the web portion 7 and being directed in the direction away from the recess 4 in the associated body 2.

Recesses 9 are fionmed in the web portion 7 of the plate 6 in engagement with the face 3 of the body 2 of the brick 1, said recesses 9 being so positioned as to be in alignment with the tabs 8 when the bricks 1, 1 are supported in combination from the hanger device 5. Each recess 9 comprises an aperture 10 formed in the web portion 7 of the plate 6 and an indented recess 1-1 formed in the face 3 of the associated body 2, said recess 11 being directed from the aperture 10 in the direction away from the recess 4 in the associated body 2.

In practice, the two bricks 1, 1' are mounted on the hanger device 5, the web portions 7 which are in engagement with the faces 3 of the bricks 1, 1' being adjacent to one another and the parts of the hanger device 5 which are located within the recesses 4 serving to support the bricks .1, 1'. The tabs 8 are then brought into interlocking engagement with the recesses 9 by introducing the ends of the tabs 8 through the apertures 10 and into the indented apertures 1 1, the required relative movement between the bricks 1, 1 to permit this to be achieved being permitted since the parts of the hanger device 5 located Within the recesses 4 are a loose fit therein.

The bricks 1, 11' may then be manoeuvred by appropriate movement of the hanger device 5 and may be lowered into position in the roof of the furnace which it is desired to patch, the hanger device being attached to the associated supporting framewonk (not shown) thereby to support the bricks .1, 1' in the roof. Since the bricks 1, 1' are secured together by means of the interlocking tabs d and recesses 9 associated with the bricks 1, 1, respect1vely, there is no risk of the bricks 1, 11' separating in the direction perpendicular to the faces 3 and falling off :he hanger device 5 during the above-mentioned opera- What is claimed is:

1. A pair of refractory bricks positioned adjacent to one another, metallic plate means encasing at least the adjacent surfaces of said bricks, protruding tab means being presented by the metallic plate means encasing that face of one of the bricks which is positioned adjacent to the other brick, recess means, with which the tab means is in engagement, being formed, as to be positloned correspondingly to the tab means, in the metallic plate means, presented by that face, of said other brick, which is adjacent to said one of the bricks, and in the associated face of the refractory body proper of said other brick so that separation of the bricks in the direction perpendicular to said adjacent faces of the bricks is prevented, a hanger device, by which the pair of refractory bricks are intended to be hung in the refractory roof of a furnace, being in supporting engagement with each of the two bricks, two oppositely directed protuberances being prsented by the hanger device and being disposed parallel to said direction perpendicular to said adjacent faces of the bricks, and correspondingly formed recesses within which said protuberances are disposed, being formed in said adjacent faces of the bricks.

2. A pair of refractory bricks according to claim 1 in which the protruding tab means is pressed from the associated metallic plate means.

3. A pair of refractory bricks according to claim 1 in which the metallic plate means encasing each said brick is constituted by two metallic plates, each said plate being of channel form, the web portions of said plates encasing opposite faces of said brick and one of said opposite faces being the face positioned adjacent to the other brick.

4. A pair of refractory bricks according to claim 1 in which said protruding tab means is downwardly directed when the bricks are operatively positioned in the refractory roof of a furnace.

References Cited by the Examiner UNITED STATES PATENTS JAMES W. WESTHAVER, Primary Examiner. 

1. A PAIR OF REFRACTORY BRICKS POSITIONED ADJACENT TO ONE ANOTHER, METALLIC PLATE MEANS ENCASING AT LEAST THE ADJACENT SURFACES OF SAID BRICKS, PROTRUDING TAB MEANS BEING PRESENTED BY THE METALLIC PLATE MEANS ENCASING THAT FACE OF ONE OF THE BRICKS WHICH IS POSITIONED ADJACENT TO THE OTHER BRICK, RECESS MEANS, WITH WHICH THE TAB MEANS IS IN ENGAGEMENT, BEING FORMED, AS TO POSITIONED CORRESPONDINGLY TO THE TAB MEANS, IN THE METALLIC PLATE MEANS, PRESENTED BY THAT FACE, OF SAID OTHER BRICK, WHICH IS ADJACENT TO SAID ONE OF THE BRICKS, AND IN THE ASSOCIATED FACE OF THE REFRACTORY BODY PROPER OF SAID OTHER BRICK SO THAT SEPARATION OF THE BRICKS IN THE DIRECTION PERPENDICULAR TO SAID ADJACENT FACES OF THE BRICKS IS PREVENTED, A HANGER DEVICE, BY WHICH THE PAIR OF REFRACTORY BRICKS ARE INTENDED TO BE HUNG IN THE REFRACTORY ROOF OF A FURNACE, BEING IN SUPPORTING ENGAGEMENT WITH EACH OF THE TWO BRICKS, TWO OPPOSITELY DIRECTED PROTURBANCES BEING PRESENTED BY THE HANGER DEVICE AND BEING DISPOSED PARALLEL TO SAID DIRECTION PERPENDICULAR TO SAID ADJACENT FACES OF THE BRICKS, AND CORRESPONDINGLY FORMED RECESSES WITHIN WHICH SAID PROTURBERANCES ARE DISPOSED, BEING FORMED IN SAID ADJACENT FACES OF THE BRICKS. 